The National Oceanic and Atmospheric Administration's Climate Prediction Center reports that El Nino is weakening but likely to stick around a couple more months. At the same time, NOAA issued a formal watch for a fall arrival of La Nina.
Prediction center deputy director Mike Halpert said it often means dry weather for parts of California, which haven't quite recovered from a four-year drought.
El Nino is the natural warming of parts of the Pacific that alters weather worldwide. La Nina, with cooler Pacific waters, often has opposite effects.